disabling StickTracking doesn't work in boost mode

[BigBrain-Industries]

Expected behaviour

In this demo:
http://jsfiddle.net/tfbj9o4h/
hovering the mouse only on a series should reveal the tooltip, not when outside a series.
Here boost is disabled and it works properly:
http://jsfiddle.net/hzokdtjy/

Actual behaviour

explained above

Live demo with steps to reproduce

http://jsfiddle.net/tfbj9o4h/

Product version

latest: "https://code.highcharts.com/highcharts.js"

Affected browser(s)

tested in Chrome

[KacperMadej]

Hi @TheGreatYamcha

Thank you for reporting about the problem, but this is a known (not properly documented, but done by design) limitation.

When in boost mode series have forced options applied, namely:

allowDG = false;
directTouch = false;
stickyTracking = true;
animate = null;

First part of resolving this problem should be to add info in docs about this as this is not mentioned in the top of the boost module as a comment, not in general documentation, not in API reference for stickyTracking.

[BigBrain-Industries]

If I disable tooltip, and override plotOptions.series.point.events.mouseOver and create my own tooltip, could I circumvent this problem in boost? or Does boost have problem with mouseOver too?

[KacperMadej]

When stickyTracking will not be changed by boost tooltip will not be triggered as the required elements that would trigger it are not there (demo: http://jsfiddle.net/BlackLabel/4ta80d2w/). The problem is with series plot - it's just an image, so it doesn't have events for only some parts of it, like points.